Concrete chute and elevator.



J. R. BOARDMAN.

GONGRETE OHUTE AND ELEVATOR.

APPLICATION FILED AUG. 23, 1912. 7 1,083,479. Patented Jan. 6, 1914.

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J. R. BOARDMAN.

CONCRETE OHUTB AND ELEVATOR.

APPLICATION FILED AUG. 23, 1912.

Patented Jan. 6, 1914.

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UNTE S ATES PATENT OFFICE.

JOHN R. BOARDMAN, OF OKLAHOMA, OKLAHOMA, ASSIGNOR TO WYLIE MANUFAC- TUBING COMPANY, OF OKLAHOMA, OKLAHOMA.

CONCRETE CHUTE AND ELEVATOR.

Specification of Letters Patent.

Patented Jan. 6, 1914.

Application filed August 23, 1912. Serial No. 716,775.

To all whom it may concern Be it known that 1, JOHN R. BOARDMAN, citizen of the United States, residing at Oklahoma city, in the county of Oklahoma and State of Oklahoma, have invented certain new and useful Improvements in Concrete Chutes and Elevators, of which the following is a specification.

My invention relates to chutes for discharging concrete, and the primary object of the invention is to form a concrete chute which has sliding engagement with a scaffold, derrick, or like structure, and which may be easily raised and lowered from one floor to another as the building progresses.

A further object is to provide a concrete chute of the character described made up of sections swiveled to each other by swivel elbows so that one section of the chute may be turned beneath the other section thereof whereby the whole chute can be raised by one operation from one floor to the next.

A further object is to provide means whereby the concrete chute may be supported upon a supplementary frame pivotally connected to a sliding member which slides upon the derrick whereby the chute may be turned in a horizontal plane to any desired angular direction from the derrick or lifted to any desired height.

Other objects will appear in the course of the corresponding description.

In the drawings: Figure 1 is a side elevation of a chute supporting mechanism of the character described; Fig. 2 is a cross section on the line 2-2 of Fig. 1; Fig. 3 is a front elevation of the chute supporting frame; Fig. 4 is a fragmentary vertical section through the hopper and the supporting means therefor and showing in elevation the pivotal support for the chute; Fig. 5 is a fragmentary section of the joint between the upper and lower sections of the chute; Fig. 6 is a perspective detail view of the upper end of the chute supporting frame; and Fig. 7 is a cross section on the line 7-7 of Fig. 1.

Referring to these figures, 2 designates a derrick, tower, or scaffold of any suitable construction, illustrated as square in cross be carried up to the upper portion of the derrick or frame 2. Disposed at the forward corners of the frame are the Vertical rails 5, these rails being disposed at the forward margin of each side of the derrick or structure 2, as illustrated in Fig. 2. Engaging with these rails 5 and moving vertically upon the face of the derrick is a chute supporting frame comprising oppositely disposed vertical members 6 extending parallel to each other and a plurality of transverse members 7, S and 9. These members 7 8 and 9 are attached to the faces of the mem bers 6. Each member 6 has attached to its rear face a strip 10 which, as illustrated in Fig. 2, extends behind the adjacent rail 5, the members 6 being deeper than the rail 5 and providing, therefore, for a sliding engagement between the members 6, the cross pieces 7, 8 and 9 and the rails 10.

T o the cross pieces 8 and 9 are attached the outwardly projecting converging beams 11. These beams are connected to each other by means of splice plates 12, each splice plate being curved at its middle to form a bead or socket 13. There are two of these beads or sockets 18, one disposed opposite the member 8 and the other disposed opposite the member 9. The beams 11 are braced by means of outwardly projecting struts 11, and the whole structure is braced by means of an upwardly and outwardly projecting strut 15 extending from the lowermost cross piece 9 to the upper strut 14.

Supported upon the cross piece 7 and pro-v jecting outwardly therefrom is a hopper supporting frame designated 16 supported by downwardly extending braces 16 extending into the cross brace 8. On this frame is mounted a hopper 17. Attached to the lower end of the hopper and swiveled thereto is an elbow 18 and connected to this elbow and extending downward therefrom is a chute or pipe 19. This chute or pipe extends outwardly from the derrick to any desired distance, and at its end has a downwardly turned elbow 20 which connects with upwardly turned elbow 20 of a chute or pipe 21 which forms a continuation of the pipe 19. The elbow .20 is formed with a flange 21 which rotates in a yoke 29. The pipe 21 is therefore rotatable into a position beneath the inner end of the chute 21 there is provided a frame composed of the upper and lower converging members 22 and 28. These at their inner ends are held spaced from each other by a vertical member 24L. The member 22 is provided at its inner end with a downwardly projecting pintle which extends into the socket 13 at the upper end of the sliding frame, while the member 23 is provided with a downwardly extending pintle 26 which extends into the socket at the lower end of the sliding frame. The members 22 and 23 converge as they extend outward and are braced by the diagonal member 27. At their meeting ends the members 22 and 23 are braced by means of the brace 28, and mounted upon said brace and extending around the-elbow 20 is a yoke 29. This yoke 29 is bolted not only to the brace 28 but to the members 22 and 23, and extending from the outer end of the yoke is a cable 30 which extends up to the upper end of the tower or derrick 2 and is there made fast. The section 21 of the chute is supported by means of a longitudinal member 31. The supporting member 22 and the supporting member 31 are both provided at intervals with steel saddles 32. These support the steel spouts or chutes. The longitudinal support 31 is supported at its extremity upon any suitable supporting member.

The tracks 5 are bolted to the cross pieces 7 8 and 9. These cross pieces are provided with a plurality of holes whereby the tracks may be spread apart or brought nearer to each other in order to accommodate the structure to derricks or towers of different widths.

It will be noted that the sockets 13 are disposed immediately beneath the vertical center of the hopper 17 and beneath the axis of the elbow 18. For this reason the frame formed of the members 22, 23, 27, etc., may be turned upon its pintles so as to swing the chutes or spouts 19 and 21 into any desired angular direction.

The upper end of the sliding frame formed of the members 6, 7 8, 9, 11 and let is adapted to be raised and lowered upon the tower by reason of the sliding engagement which this frame has with the tracks 5. For the purpose of raising and lowering the frame, the upper end of the frame is connected to a suitable lifting apparatus, as for instance, by means of a cable 33 attached to the cross bar 7 and extending up and over a pulley, the cable passing down to any convenient point where it may be engaged with a winding mechanism or where it may be attached after the frame has been raised to its proper position by hand. By this means the rear end of the chute and the hopper may be lifted upward as the work progresses or may be easily lowered. Bv turning the end section 21 of the spout directly underneath the frame formed by the members 22 and 23 and tying it to said members, the whole chute can be raised by one operation from one floor to the next.

The principal use for which my concrete chute and elevator has been devised is for the 7 distribution of concrete in concrete building by having the two pivotally supported arms and a chute formed with an elbow connected to the hopper, and an intermediate elbow connection whereby any part of a building may be reached by the chute and the concrete which is mixed on the ground and hoisted in an automatic bucket and dumped into, the hopper may be conveyed to the point where it is used, thus eliminating manual labor in the distribution of the semifluid concrete. The free end of the chute'is simply mounted on any suitable support such as a saw horse so that two men can pick the end of the chute up and carry it to any place within reach of the arm or the chute or delivery pipe can be doubled back on itself into various positions, even having the joint of the arm reach around behind the derrick tower or doubled up immediately beneath the derrick tower.

It is obvious, of course, that various minor changes might be made in the structure without departing from the spirit of my invention, and I do not wish to be limited to these details.

Having described my invention, what is claimed as new is:

'1. The combination with a tower, of a frame slidably mounted upon the tower for vertical movement, a frame comprising members attached at their inner ends to the upper and lower ends of the first-named frame respectively, said members converging, said last-named frame being pivotally connected to the first-named frame for movement in a horizontal plane, a hopper mounted upon the first-named frame, and a chute swiveled to the lower end of the hopper and supported upon the second-named frame.

2. The combination with a tower or derrick, of a chute supporting frame slidably mounted upon the tower or derrick for verchute swiveled to said hopper for movement in a horizontal plane, and outwardly projecting supporting members for said chute pivoted to said sliding frame for movement in a horizontal plane.

a. The combination with a derrick or tower having laterally disposed tracks extending vertically at the front margins of its sides, of a sliding frame comprising spaced vertical members and spaced transverse members, strips mounted upon said transverse members and extending over and behind said tracks, outwardly extending converging beams mounted upon the transverse members and braced therefrom, pintle sockets carried upon said beams, a hopper mounted upon the frame so formed, the axis of the hopper being immediately in line with said sockets, upper and lower outwardly converging supporting beams having pintles at their inner ends engaging said sockets, a yoke carried at the ends of said beams, an elbow carried at the lower end of the hopper, a chute or spout connected to said elbow and connected to the uppermost of said outwardly projecting beams, an elbow carried at the outer end of the chute, and surrounded by said yoke, a spout forming a continuation of the firstnan1ed spout and having swiveled engagement with said elbow, supporting means for said last-named spout, means for elevating the sliding frame upon the tower or derrick, and a supporting cable connected to the yoke and to the tower.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN R. BOARDMAN. 1,. 8.] Witnesses:

J. S. VVYLIE,

GUNNELL MOORE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

